IAdsSymbolicAccessReadValueAsyncT(ISymbol, CancellationToken) Method
Reads the value of a symbol as an asynchornous operation and returns the value of the specified type.
Namespace: TwinCAT.Ads
Assembly: TwinCAT.Ads.Abstractions (in
TwinCAT.Ads.Abstractions.dll) Version:
7.0.0+e56d35ccc4675faac24789a4aab60071fc61d470
Syntax
C#
Task<ResultValue<T>> ReadValueAsync<T>(
ISymbol symbol,
CancellationToken cancel
)Parameters
|
symbol ISymbol |
The symbol that should be read. |
|
cancel CancellationToken |
The cancel token. |
Type Parameters
|
T |
The value type. |
Return Value
Task
ResultValueT
A task that represents the asynchronous read operation. The
ResultAnyValue
parameter contains the read value (Value) and the
ErrorCode
after execution.
Remarks
This method automatically marshals the read values to appropriate .NET objects if possible. The overall behaviour is described here in the interface description.
Reference
IAdsSymbolicAccess Interface ReadValueAsync Overload TwinCAT.Ads Namespace ReadValueT(ISymbol) TryReadValueT(ISymbol, T)
Beckhoff Automation GmbH & Co. KG 2001-2026